Notes from SoHO Daily Meeting, 07 Oct 1996 (DOY 281) ----------------------------- Meeting chaired by Laura Allen, notes by Julia Saba (MDI) Science operations leader (SOL) for the week is John Kohl (UVCS) ANNOUNCEMENTS: None ------------- FOT REPORT by Nick Piston ---------- o Spacecraft status: nominal, no anomalies o Activities accomplished: Roll Steering Law (RSL) and VIRGO uploads o Activities planned: RSL and VIRGO uploads, CELIAS upload at 1930, Acquisition of 2 new guide stars. 08-Oct (DOY 282): Switch guide star. New guide star be magnitude 6.9, which is fainter than what is preferred. o Ground System Anomaly Report: DOY 279/1452: Telemetry dropout due to solar RFI (3 min, recoverable) DOY 280/1644: Miscoordinated station transfer (5 min commanding delay) DOY 280/2003: POCC String 1 crashed (5 min NRT lost) SCHEDULE: -------- No changes. Tomorrow's long contact starts at 1245 UT, a little earlier than usual for the rest of the week. >> SOL John Kohl took over chairing the meeting at this point. He asks for feedback on how much science discussion is wanted in this forum. INSTRUMENT REPORTS: ------------------ CDS - Nominal. - The good news is that CDS followed the SW prominence which erupted, all weekend. The bad news is that CDS missed the actual eruption. - Moving to the NW prominence today, for JOP 003 and JOP 017. Pointing for tomorrow TBD. - Intercal 001 at 1530 and 2000 UT. SUMER - Still has telescope pointing problems, but initialization at the start of each sequence keeps pointing errors from accumulating. Diagnostics are being run. UVCS - Nominal. - Ran usual synoptic program last night. - Most of available hours today will be used for Intercal 001 at 1800 UT. - Synoptic program tonight. - Tomorrow will support JOP 003, which may also support LASCO/UVCS collaboration to measure outflows. LASCO - Nominal. - Don Michels authorized increased cadence for C2 images for JOP 003, by changing the synoptic cadence. [There had been no specific request from the JOP leader or other instrument teams, but that request was made today.] EIT - Nominal. - Yesterday through tomorrow, will collaborate with Big Bear Solar Observatory to study spicules at W. Limb and N. Pole. - Saw CME in 195-A image. Have He II 304-A images before and after, but not during, the prominence disappearance. MDI - Nominal. - Over the past weekend through today, running high-cadence, full-disk helioseismology program. - Tomorrow will test campaigns for three hours in VC2, about 1500-1800 UT. If the tests are successful, MDI could support other instrument studies for the rest of the long contact. - Wednesday through Friday, will run helioseismology program in the high resolution field. Observing mode include 2x2 binned magnetograms, once per minute. - Running usual synoptic full-disk magnetograms, which will support JOP 003. COLLABORATIONS FOR THE WEEK: --------------------------- - JOP 003 (Coronal Mass Ejection Onset) will be run all week, for roughly 6 hours each day, starting at about 2000-2100 UT (Check Web for updates). Current target is prominence on NW limb. May switch to filament near South pole (currently at about 475 arcsec W, 758 arcsec S) which is a few days from the West limb. - CDS will make 4 arcmin x 4 arcmin maps centered on the filament, with a period of 5 minutes, in cool lines such as OV,VI, He II, Si IX. - SUMER will raster over an area 130" E-W and 120" N-S in Si IV and O IV. They will make quick context scans at high resolution and then make longer integrations. - UVCS will run a 3-day repeating sequence: - Day 1: characterize the region above the prominence, - Day 2: image the prominence on the disk in Lyman alpha - Day 3: sit and stare above the prominence for long period The UVCS team prefers a prominence target close to the equator, which they could also use for collaboration with LASCO to measure outflows. - LASCO will operate with a higher than usual cadence of C2 images. - MDI will contribute full-disk synoptic magnetograms. - Macrospicule study: collaboration between EIT and BBSO, looking for fine transient events, starts on Thursday. EIT will run in half-hour cadence with 600x600 pixel field. Tomorrow CDS will co-point with EIT and run a movie sequence, with 4 arcmin square field of view, mostly in cool lines, but also in Mg X. - Intercal 001 Target is Sun center, with a field of view of 60" x 300". - JOP 052, a coronal oscillations study targeting polar plumes, will be run next weekend. AOB: --- - There may be a Science Club meeting later this week. Stay tuned. - The usual LASCO operator, Shane Stezelberger, is at school this week, so Elaine Einfault, the EIT operator, is loading plans for both instruments. So it will be harder than usual to make changes in plans, except for pointing updates. Plans for next week should be finalized by Thursday noon (local) time).